Hey glopez,
I have the same issue on mine.
I just bought it two weeks ago as my first scooter. It's an '09 and had 1670 miles on it when i picked it up.
Now it has 2020 miles on it and I ride it in the passenger position all the time with my feet on the pegs (let's me duck behind the windscreen a little on cold mornings). I'd love to know if you have a solution for the spring back!
Thanks!
--Kevin